Quantitative phase analysis of boron nitride nanotubes using Rietveld refinement

Yong Il Kim, Jae Kap Jung, Kwon Sang Ryu, Seung Hoon Nahm, Duncan H. Gregory

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Crystalline boron nitride nanotubes (BNNTs) with an average outer diameter of about 40 nm and several micrometres in length were synthesized by chemical vapour deposition from boron and magnesium oxide. Rietveld refinement and 11B solid-state nuclear magnetic resonance (NMR) spectroscopy were employed to quantitatively determine the phase of synthesized BNNTs. The structural parameters for the BNNTs were determined by Rietveld refinement against powder x-ray diffraction data with a model based on the results of NMR analysis. The final weighted R -factor, Rwp, was 6.08% and the goodness-of-fit indicator, S (= Rwp/Re), was 1.52. The BNNTs consisted of hexagonal BN, rhombohedral BN and MgO with refined weight fractions of 76.3%, 21.2% and 2.5%, respectively.

本文言語英語
ページ(範囲)1127-1131
ページ数5
ジャーナルJournal of Physics D: Applied Physics
38
8
DOI
出版ステータス出版済み - 4 21 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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